In researching a certain Davidson family, the farthest back I can get is an Andrew Davidson born about 1810-1813 at Lasswade (as per census info) who married Margaret Aitkin on July 4, 1834- Margaret was born April 30, 1808 at Carnwath, Lanarkshire to William Aitkin and his wife Helen Somerville. Margaret's parents William and Helen were married March 14, 1802 at Dunsyre, Lanark. I believe I took the latter info from the LDS site; someone must have retrieved that marriage and submitted it.
I know that William and Helen Aitkin also had a daughter Elizabeth born Aug. 24, 1805 at Carnwath; and Isobel born July 14, 1809 at Carnwath. I have no other info about these 2 girls.
Margaret Aitkin and her husband Andrew Davidson had at least four children:
Alexander Davidson born about 1836 who married Martha Edmond in November 1856 and had at least 2 daughters; I can't find them past the 1861 census in Westgate, Northumberland, England, although I believe daughter Margaret is on the 1881 census in Newcastle on Tyne.
Helen Davidson born about 1838 married John Mitchell and had at least 3 daughters; Helen was on the 1891 census in Glasgow, a widow.
Margaret Davidson born about 1840, no further info
William Davidson born about 1842 who married Elizabeth Marshall from St. Vigeans, daughter of John Marshall and Magdalene Moonlight (!)William and Elizabeth had at least eight children and it is this line I am working on. In 1901 William and Elizabeth Davidson were living in the district of Kelvin in Glasgow. Elizabeth died that same year in December; I have not found a date of death for William.
I cannot find a date of birth or baptism for any of these four Davidson children at ScotlandsPeople which is really odd, and needless to say I can't find a family of origin for their father Andrew Davidson.
Margaret Aitkin wife of Andrew Davidson died on Nov. 25, 1871 at Abbey Hill, Edinburgh, Midlothian. Andrew lived another 14 years and died in Glasgow.
If anyone has any info to share on these folks, please contact me.